Form for concrete construction.



C. BRYNOLDT.

FORNI FOR CONCRETE CONSTRUCTION.

APPLICATION FILED MR. IS, I9I5.

Patented IIQC. ISI, ISIIIS.

5 SHEETS Y SHEET I.

wwNEssEs *d INVENTOR C.BRYNOLDT FORM FOR CONCRETE CONSTRUCTION.

APP11CAT10N F1150 MAR 19.1915

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5 SHEETS SHEET 2.

FNS QZZZZ 1NVENT0R ATTORNEYS www y Nm Zf @mj 0.5RYNULDT. FORM FOR coNcREIE 'coNsTRUcHow APPLICATION HUD MAH I9, 19|5.

Patented Deia. 1S), i916.

5 SHEETS-SHEET 3.

wn'NEssEs j@ ZZ FORM FOR CONCRTE CONSTRUCHON.

APPLICATION HLED MAR 19.1915.

5 SHEETSSHEET 4.

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ATTORNEYS C'. BHYNOLDT.

FORM FOR CONCRETE coNsTRucTmN.

APPLICATION FILED MAH` 19, l9l5. l 9%@99391 Patented D66- 19, 1916..

5 SHEETS-SHEET 5.

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ATTORNEY@ sas .aN fr onen CHRISTIAN IBRYNOLIDT, OF PITTSBURGH, PENNSYLVANIA, ASSIG'NOR TO BL'W STEEL CONSTRUCTION COMPANY, F PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

FORM FOR CONCRETE CONSTRUCTION.

Specification ofiLetters Patent.

Patented llee.. 19, 1916..

To all l/tom it may concern:

Be it known that I, CHRISTIAN BRYNOLDT, a subject of the King of Denmark, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Forms for Concrete Construction, vof which the following is a specification.

The invention relates to steel forms for use with concrete in the formation of floors and walls. The invention has one of its important uses in the formation of subways and is so illustrated, although not limited to use in that particularrelation. The'invention has for its primary objects; the provision of a panel structure capable of adjustment to permit of its use -with beams vof j different .depths and which are differently spaced, and which can be readily removed after the concrete has set; and theprovision of a panel structure capable of modification for use in the various relations encountered in constructive work. Certain embodiments of the invention are illustrated in the accompanying drawings, wherein- Figure 1 is a plan view showing the gen- 1 eralarrangement of the apparatus, Fig. 2 is a side elevation ofthe apparatus of Fig. 1, Figs. 3, 4, and 5 are detail views of one of the panels employed, Fig. 3 being a side elevation, Fig. 4.a bottom plan View, and Fig. 5 an enlarged detail section taken at the latch, Figs. G, 7 and 8 are detail views of the bulkhead panel employed, Fig. 6 being a plan view, Fig. 7 a side elevation, and l `ig. 8 a section on the line VIII-VIII of Fig. 7, Figs. 9, 10, and 11 are detail views of a modfied form of bulkhead panel, the

views corresponding to those of Figs. 6, 7 and 8, and Figs. 12, 13, and 14 are detail views of a wall panel constituting a modifcation of the ceiling or ioor panel of Figs. 3, 4, and 5, Fig. 12 being a plan view, Fig. 13 a side elevation, and Fig. 14 a section on the line XIV- XIV of Fig. 12. j

Referring to Figs. 1 and 2, A, B, and C are the I-beams extending transversely of the subway, such I-beams being supported by the upright columns D. Lylng between the beams A, B, and C are the removable roof panels to which my invention particularly relates, such panels constituting the forms upon which the concrete is placed to form the ceiling or roof of the subway. These panels, which vare designated by the reference letters E, F, G, and I-I are of four dierent kinds. rIhe panels E are of the type illustrated in Figs. 3, 4, and 5, and are what may be termed the standard panels, since they are used in the largest number. The panels F are what may be termed lap panels since they bridge gaps between the standard panels E. rIhey consist of sheets overlying and supported by the standard panels, and their precise structure is not illustrated in detail, such panels constituting n'o part of my present invention. The panels Gr are known as bulkhead panels, such panels being illustrated in Figs. 6, 7, and 8. j rIh'ese panels are used where a parti, tion wall or bulkhead K is to be formed, such panels having .not only the top or crown sheets of the standard panels, but also having vertical back sheets for supporting the concrete in the wall K. The panels H may be designated as end bulkhead panels. They are similar to the panels G except that they have their vertical sheets curved as indicated at L, designed to give a more or less ornamental appearance to the side walls of the subway. These panels are illustrated in Figs. 9, l0, and 1l. In addition to the foregoing panels there is still another set of panels M shown on Fig. 2, such panels being the wall panels and lying beneath the panels II. These panels are shown in Figs. 12, 13, and 14. The standard, bulkhead, and wall panels differ somewhat in their specific construction as will hereinafter appear, but have certain structural features in common,

and when taken together meet the varying requirements involved in subway work due to the varying spacings, depths and arrangement of the beams and columns.

The standard panel E illustrated in Figs. 3, 4, and 5 is designed to be used between beams spaced different distances apart and of varying height, and to this end the panel is adjustable in length and also adjustable vertically. The construction is such that after the concrete has set the panel may be readily removed. Each panel consists of two overlapping crown sheets 1 and 2,' such crown sheets carrying at their sides depending side sheets 3 and 4. The crown sheets are stifl'ened by the angles 5 and 6 and the side sheet by the vertical angles 7 and 8. The two crown sheets are held in their desired positions of adjustment by means of the perforated bars 9, such bars overlapping the incurved ends (Fig. 4) of the angles 5 and 6 and being secured thereto by means of the bolts 10. In order to secure an adjustment finer than that aHorded by the holes in the bars 9, the perfor-ations in the ends of the angles 5 are made in the form of slots as indicated in Fig. 3. The panel is held in position by means of a pair of latches 11, such latches being slidably mounted on clips or angles 12 carried by the side sheets 3 and 4. r1"he sliding support is secured by means of a bolt 13 litting in a slot 14 in the latch. The latchis held securely in the position illustrated in Fig. 5 by means of a pin 15 eX- tending through perforations in the latch and angles 12. When it is desired to remove the panel after the concrete has set, the pins 15 are removed land the latches pulled inwardly, the perforations 16 being provided to receive the finger or an operating tool. Each crown sheet 2 is braced from its side sheet 3 by means of a diagonal member 17 provided with a plurality of perforations, and the two halves of the panel are held in their proper relative positions by means'of the transverse brace 18 also provided with a plurality of perforations at its end whereby such ends can be bolted to the diagonal braces. It will be seen that this arrangement permits of the adjustment of the two halves of the panel toward and from each other without the necessity of using a turn buckle or other similar device adjustable in length. In order to permit of the vertical adjustment of the panel with. respect to the beams upon which it is supported, the plurality of perforations 19 and 20 are provided in the side sheets so that the latch 11 can be adjusted up or down as desired. j

When a bulkhead or wall such as that indicated at K (Figs. 1 and 2) is to be formed, the bulkhead panels G must Ibe employed, such bulkhead panels being indicated in Figs. 6, 7, and 8. n These panels are made in two parts having the overlapping crown sheets 21 and 22 corresponding to the crown sheets 1 and 2 of the apparatus of Fig. 1. These crown sheets carry the depending back sheets 23 and 24 against which the concrete to form the wall K is to be placed, such sheets overlapping in the same manner as the crown sheets. Secured to the outer edges of the sheets 23 and 24 are the series of overlapping plates 25, such plates having their outer edges 26 bent at right angles ,so that together they constitute a side wall for the panel. This construction permits the panel to be built up to meet requirements incident to irregularities in construction and to the use of the supporting girders D and their cap plates which would in most cases prevent the use of standard panels, even though such panels were provided with back plates. The plates 25 are bolted on and can be removed and other panels substituted 'head H of Figs. l and 2.l In this case the lcrown sheets 30 and 31 are similar to the crown sheets 21 and 22 of Fig. 6, but the back sheets 36 and 37 (Fig. 9) are curved instead of straight, the purpose being to give the side wall of the subway a recurved form. Stiffening angles 33, 34 and 35 are employed as illustrated, and plates 32 corresponding to the plates 25 of Fig. 7.

Figs. l2, 13 and 14 illustrate the side wall panels used to form the side walls of the subway beneath the panels H, such panels having the overlapping 'crown sheets 38 and 39 of the same curvature as the plates 36 and 37 in the construction of Fig. 9, and

such crown plates carry the relatively short side sheets 40 and 41 corresponding to the side sheets in the construction of Fig. 3. These side sheets are provided with angles 40q to which is detachably bolted the angle beam 42, such beam being provided at one end with a slot 43 (Fiof 13) to permit of the use of the beam when the two halves ofthe panel are spread farther apart, such as would happen when the columns D happened to be spaced farther apart. The side sheets 40 and 41 are alsoprovided with clips carrying a pair of latches 11 of construction and arrangement similar to that ofthe latches 11 described in connection with Fig. 5. .The central portion of the beam 42 is provided with a pair of angles 44 in which is mount-- ed the guide bolt 45. The opposing edges of the crown plates 38 and 39 are provided with the vertical angles 46, the flanges of which have perforations fitting over the bolt 45, so that the two edges of the plates 38 and 39 are guided in their sliding movement and held against movement away from each other. The beam 42 holds the panel against movement at its outer edUes and also supports the angles 44 which holod the inner edges of the crown pla-tes in proper position.

IVhat I claim is:

1.. In combination a panel comprising a pair of overlapping crown sheets, means whereby they may be held together at their overlapping portions in various positions of adjustment, a side sheet depending from the o uter edge of each crown sheet, and having a relatively smooth outer mold surface forming a continuation of the outer mold surface of the crown sheet, a diagonal corner brace extending from each crown sheet to its side sheet and provided with a series of perforations, a transverse brace ends of the transverse brace and those in the corner braces.

2. In combination, a bulkhead panel cornprising a pair of overlapping crown sheets, a'back sheet depending fromy each crown sheet with the inner portions thereof overlapping, and a'built up outer portion carried by each sheet and comprising a-plu e rality of overlapping sheets bent at substantially right angles so that the portions thereof secured to the back plate constitute. a continuation of such back plate and the portions bent at an angle thereto together constitute a side plate depending from the crown sheet.

3. In combination, a panel comprising a pair of overlapping crown sheets, a side sheet extending inwardly from the outer edge of each crown sheet, a beam extending transversely past the edges of the side sheets and secured thereto, anda securing member projecting outwardly from each side sheet for engaging a support and movable laterally to disengage it from the support.

4. In combination, a panel comprising a pair of overlapping crown sheets, a side sheet depending from the outer edge of each crown sheet, a beam extending transversely past the edges of the side sheets and `secured thereto, a guide means carried intermediate the ends of the said beam, means carried by the overlapping portionsof the crown sheets for slidably engaging the said guide means, and a securing member projecting outwardly fromeach side sheet for engaging a support and movable inwardly to disengage it from the support.

- 5. In combination, a panel comprising a pair of coperating crown sheets movable toward and from each other, means whereby the adjacent edges of the crown sheets are guided relatively, a side sheet extending inwardly from the outer edge of each crown sheet, a beam extending transversely past the edges of the side sheets and secured thereto, and a securing member projecting laterally from each side sheet for engaging a support andv movable laterally to disengage it from the support.

6. In combination, a panel comprising a pair of crown sheets having an overlap joint at their adjacent edges, means whereby they may be relatively supported at their adjacent edges, al side sheet depending from the outer edge of each crown sheet and having a relatively smooth outer mold surface forming a continuation of the outer mold surface of the crown sheet, a latch projecting inwar-dly from each side sheet for engaging a support and movable inwardly to disengage it from thesupport, and means whereby the latches may be adjusted toward and from the crown sheets.

CHR. BRYNOLD'I. 

